RegEx in TSQL - replace non-alphanumeric characters etc

Question

Hi guys, I have this function in VB that I used in Access to replace all non-alphanumeric characters, including spaces and anything in brackets.
Public Function charactersonly(inputString As String) As String
Dim RE As Object
Set RE = CreateObject("vbscript.regexp")
RE.Pattern = "\([^)]+\)|[^\w]|_"
RE.Global = True
charactersonly = RE.Replace(inputString, "")
Set RE = Nothing
End Function
Now, I moved to SQL server and I'm writing scripts to do same thing.
How can I use RegEx in TSQL?
Only thing I will do is that function.

Answer 1

As alternative
declare @string varchar(200)
set @string = 'gg$%^^&is%^& s2342jjk23&&({}e c76l232e+_+a#n/ c][#o''y#e'
select cast(cast((select substring(@string,n,1)
from numbers
where n <= len(@string)
and substring(@string,n,1) like '[0-9 ]' for xml path('')) as xml)as varchar(max))
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
MS SQL Consulting:
Large scale of database and data cleansing
Remote DBA Services:
Improves MS SQL Database Performance
SQL Server Integration Services:
Business Intelligence